Xref: utzoo comp.graphics:12182 sci.med:18130
Path: utzoo!attcan!uunet!cs.utexas.edu!sdd.hp.com!andrea
From: andrea@sdd.hp.com (Andrea K. Frankel)
Newsgroups: comp.graphics,sci.med
Subject: Re: Greyscale to colour.
Message-ID: <1990Jun27.192933.18169@sdd.hp.com>
Date: 27 Jun 90 19:29:33 GMT
References: <1536@med.Stanford.EDU> <1597@quando.quantum.de> <1613@med.Stanford.EDU>
Organization: Hewlett-Packard, San Diego Division
Lines: 27

In article <1613@med.Stanford.EDU> rick@hanauma.stanford.edu (Richard Ottolini) writes:
>In article <1597@quando.quantum.de> hintz@quando.UUCP (Stefan Hintz) writes:
>>>However, when I watch a color TV signal in B&W I often have no problem
>>>identifying the color of objects and I don't know why.
>>
>>I know why ...
>>You know the sky is blue, the trees are green, etc...
>
>Most TV scenes are inside buildings.  It is the color of people's clothes,
>the walls, etc. that I see in B&W.

Is it possible that you are slightly colorblind, Richard?  One of my
friends who is told me that he sees many things as subtle shades of
grey.  I have no idea whether the "mapping" from color to perception
in a colorblind person matches the mapping from color TV signal to 
B&W TV picture, but if it does, then I'd expect the colorblind person
to automatically process the data and infer color out of it in the same
way.


Andrea Frankel, Hewlett-Packard (San Diego Division) (619) 592-4664
	"wake now!  Discover that you are the song that the morning brings..."
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